Excavating wheel



May 15, 1923.

J. DUDER EXCAVATING WHEEL Original Filed May 26 1921 5 Sheets-Sheet 1 avwamtoz J. DU DER EXCAVATING WHEEL May 15, 1923. L455fi8 Original Filed May 26 1921 3 Sheets-Sheet Z gnvmtoz Patented May 15, 1923.,

ar s s ta-g JOHN Donna, or SALT LAKE CITY, UTAH, nssrenon or ON -HALF, r0 nownrtn s; BROWN, or OASIS, UTAH,'A1\TD ONE-FOURTH T0 SAMUEL w. STEWART, or saw 1 LAKE CITY, UTAH.

EXCAVATING WHEEL.

', Apph'cation filed May 26, 1921, Serial no. 472,735. Renewed arch 24, 1923.

Toall whom it may concern .1

Be itknown that I, J oH DUDER, a citizen ofthe United States, residing at Salt Lake City, inthe county of Salt Lake and State of Utah have invented certain new and useful Improvements in'EXcavating 'Wheels; a'ndI do declare the following to be a full,

' clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the me. s V c,

Thisinvention relates to an improved eX- cavating wheel for use in digging ditches and one object of the invention is to provide an improved excavating wheel having an improved construction in the bucketj and to particularly. provide improved doors and means for releasably holding. the doors in a closed position. v v

Another object of the invention is to so construct this wheel that the doors may be securely held in a closed position when desired but permitted toeasily move to an All open position when a bucket is in the proper position for dropping the contents of the bucket onto a conveyor belt. I

Another object of the invention is to provide type of scraper for emptying the con-- tents. from the bucket. I

Another object of the invention is to so construct and mount the doorsof, the bucket that after being moved to an open position, the door'slwill. oftheir own weight move to a closed position as the wheel continues to rotate and the bucket moves downwardly into a trench.

Another object of the invention is to provide an excavating wheel in which the bucket will be strong and durable and of a simple, construction.

This invention is illustrated in the accorn panving drawings, wherein Figure 1 is a view showing the improved excavating wheel in vertical section and in position for use.

. Figure 2 is an enlarged fragmentary'view showin'gea portion of the wheel in elevation.-

' Figure 3 is a top plan view of the structure shown in'FigQ 1 I 4, isa frag'mentary top plan view shbmng the doors open,

Figure 5 is asectional View taken along the line 5 5 of Fig. 2.-

Figure 6 is a transverse sectional View through a bucket Withthe scraper'shown in elevation. p v p This improved excavator is of the-wheel type and includes a frame having side bars 1 The Wheel is rovided withside new which are positioned between thesideubar's 1 and about the hanger frames 2 and carry toothed rings or sprocket rings 6 which will I be in intermeshing engagement with, the driving sprockets, It will thus be seentha't since the rings, are rotatably mounted by means of the rollers 8 and the sprocket teeth mesh with the teeth of certain of these roll ers, that rotary movement canbe transmit.- ted to the rings when power is applied to the shaft carrying the sprocket wheel. M

The buckets are carried by side rings 5 and eachis provided with an open ended body portion 7 formed of heavysheet. metal and having its side portions overlapping the side rings 5 and secured to the same by rivets or other suitable fasteners. Cutting teeth 8 are secured to the outer face of the bucket and have their end portions extendingbeyond the end of the bucket and bent to ex tend as shown so that thes eteeth will cut into the ground as the wheel rotates It will thus been seen that with the wheel in posi} tion and rotating, the teeth will cut into the breast portion of the trench and the dirt scraped and cut loose by the teeth will fall into thebuckets. Each bucket is provided at its rear end with doors 9 which are carried by hingebars 10, the hinge bars 10 being pivotally mountbraces .13. The deorswiu therefore he pivotally mounted at the rear end of the bucket and will be so balanced that after the doors have been swung to an open. position and continued rotation of the wheel moves a bucket; downwardly? into" the trench, the doors willof themselves swing to the closed position. When the bucket is moving up- I wardly,; the weight of the doors and the e T this Wheel;

weight-of dirt scraped ,into the bucket would cause the doors to swing open but in order to prevent this, there has been provided arcuate strips li which are suitably supported from the'side bar's-=1 and extend from a polnt ad jacent the bottom of the trench to a point adjacent the upper portion of the wheel but somewhat short of the uppermost point of In order to provide bottom for the buckets, there hasbeen provided an arcua'te strip 1-5 which issupported from thedepending frames 2 asshown at 16 and'isof substantially the same: lengths as the strips 14. At

the upper end of this bottom strip 15, there i dirt from the'buckets and carryv the dirt to a metal. This scraping bladevor plate -20uis has been secured a plate 17 which: constitutes a chute andextends downwardly over an endless conveyor 18 'whieh extends through the wheel and is adapted to receive suitable point of delivery. Asupport 19 is carried by one of the sidebars of the conveyor-and carries a scraping blade-2 0 which is in the form of a stripof heavy sheet braced by bracing bars 21 which are formed of angle iron and supported from the side bars l'within the wheel as shown at 22. The scraping blades and bars 21 I are further bracedby a plate 23 which is secured be.-

tween the angle bars 21and cuton the are of'a circle to give added strength to this plate; It will-thus be seen that this excavating wheel will be simple in construction but at theisame time very strong and durable.

I) then move upwardly with theteethfS cutting 1 When this wheel isin use, it is mounted as shown and, as the wheel rotates, the bucket will first move' down into the trench and will and scraping into the breast of the trench.

' material is being excavated and would have a tendency to remain in a solid cake this with the side strips 1 1, the scraping blade or plate 20 will have entered the open forward end of thebucket and any dirt which has not of itselffallen" onto the chute 17 and moved down this chute. onto the endlessconveyor will be scraped loose. If clay or other solid cake would be forced rearwardly the open position thus permitting the cake to be forced out of the bucket and drop downv onto the -conveyor". Openingm'ovement of the doors is limited'since the doors will engage the rings 5 and therefore cannot move outwardly beyond the position shown in Fig i, As soon as the bucket moves out ofengage ment with the scraper and starts to move downwardly, the doors will be left free to bucket and the doors would be moved to an i close and upon continued; downward movement of these doors," the doors will of their own weight swing inwardly to" a closed .po-

sition where they will remain Itwill thus be seen that the scraper is so constructed that it may thoroughly'serape the dirt and caked clay out of the bucket and that the doors V areso mountedth'at thedoors may be swung tov an open position by pressure of "caked clay or by the action of the" scraper moving rearwardly through the 'bu'cketL, Itwill, be

further noted that the excavating wheel is so constructed that the. doors willof themselves swing to a closed position and that improved means has-been provided. for retaining the doors in a closed position while'the buckets are beingv filled anduntil the buckets $3,

the proper position for emptying.

I'claimi A y g I 1. In an excavator, a'rotatablewheel having spaced side rings, open ended buckets carriedby the side rings, astationary bot- 1;

tom strip extendingfbetween the side rings adjacent their inner peripheriesfora por-j tion ofthe circumference ofthe (wheel side,

strips extending v.circumferentially. of the wheel and conforming to thevposition and length of the bottom strip, doors for the rear ends of the buckets hingedlymounted at the sides for opening outwardly and provided with lever arms extending {forengaging said side strips and holding the doors; closed while the buckets are moving upwardly along the bottom strip, and a scraper for passing through the buckets, the arms moving out of engagement with the side strips and the doors moving to an'open position. as

the scraper passes through the buckets,and

the ringslimiting outward movementbf the doors.

. 2. In an excavating, device, rotatable 7 wheel including spaced SldGIlIlfQIS, openend' ed buckets carried bythe wheel, stationary side strips extending partially about the wheel, a stationary bottom strip tor/the buckets extending partially about-the wheel,

in conformitytothe length and position of theside strips, pivot (pins carried by the sidev rings of said wheel a acent. the rearends of said buckets andextending outwardly, doors for the buckets pivotally mountedbyssaid pins for swinging transversely .Iofl the. buck.

ets and wheeland each proyided with i side strips engaglng the arms of the doors to hold the doors closed until the buckets reach the point of discharge and said doors being limited in their opening movement by engagement with the spaced rings of said wheel, and a scraper at the point of discharge for passing through the buckets and moving the doors outwardly to an open po- 10 sition.

In testimony whereof I have hereunto set my hand.

J OHN DUDER. 

